| IMMA | International Motorcycle Manufacturers Association | 国际摩托车制造商协会 |
| IMMA | International Maritime Meteorological Archive | 国际海事气象档案馆 |
| IMMA | Insured Money Market Account | 保险货币市场账户 |
| IMMA | Installation Materiel Maintenance Activity | 安装装备维护活动 |
| IMMA | Irish Museum of Modern Art | 爱尔兰现代艺术博物馆 |